AIS in Shannon used to issue the paper AIP's. They still issue paper updates, but I think that they only issue CD copies to people asking for it now.
Their number is +353-61703750 or +353-61-770700.
As Whopity says you don't really need a copy of the AIP. An up to date chart, and print off the info for any of the regional airports you're interest in from the online AIP. There is only a handfull of them published in the AIP.
You don't really need a guide for the smaller airports that aren't in the AIP, but if you want one, then you can buy a "pooleys Ireland guide" from any of the UK online pilot shops eg.
www.transair.co.uk